November 21 ,  2022.

Kamchatka , Klyuchevskoy :

VOLCANO OBSERVATORY NOTICE FOR AVIATION (VONA)

Issued: November 20 , 2022
Volcano: Klyuchevskoy (CAVW #300260)
Current aviation colour code: YELLOW
Previous aviation colour code: green
Source: KVERT
Notice Number: 2022-178
Volcano Location: N 56 deg 3 min E 160 deg 38 min
Area: Kamchatka, Russia
Summit Elevation: 4750 m (15580 ft)

Volcanic Activity Summary:
According to the video data by KVERT, the Strombolian type of an explosive eruption of Klyuchevskoy volcano began to observing from 11:30 UTC on 17 November, 2022, and such activity continues. The appearance of a new thermal anomaly over the volcano was noted on 13 November, and the temperature of the thermal anomaly began increasing from 17 November, and this continues. The strong gas-steam plume is extending to the southeast of the volcano at now.

KVERT continues to monitor the Klyuchevskoy volcano.
A moderate explosive eruption of the volcano continues. Ash explosions up to 5-6 km (16,400-19,700 ft) a.s.l. could occur at any time. Ongoing activity could affect low-flying aircraft.

Volcanic cloud height: NO ASH CLOUD PRODUSED
Other volcanic cloud information: NO ASH CLOUD PRODUSED

Source : Kvert.

Photo : Volkstat ru.

El Salvador , San Miguel ( Chaparrastique) :

Special Report No. 5
WARNING. As intermittent explosions and outgassing continue in the San Miguel Volcano, it is called upon to be vigilant and not to carry out activities in the vicinity of its central crater.

Date and time of broadcast: November 20, 2022, 11:00:00.
The San Miguel volcano continues to record intermittent explosions, gas and water vapor emanations, with the probability of generating interruptions in the activities carried out near its crater.

According to the follow-up of the seismicity, the gas concentration and the characteristics of the ash collected, this activity will continue during the following days. Therefore, it is called to PAY ATTENTION mainly to residents of the municipalities of San Jorge, Chinameca, San Rafael Oriente and sectors near the volcano in the municipality of San Miguel.

Since Tuesday, November 15, the San Miguel volcano, through its central crater, has exhibited intermittent explosions, accompanied by gas, ash and abundant water vapor. The total number of explosions recorded is 62 to date, with a daily average of 10. The average height reached by the explosions was around 500 meters. However, the highest explosions, around 1100 meters, occurred on Friday the 18th at 1:36 p.m.; and Saturday 19 at 12:06 p.m.

Seismicity:
Variations in seismicity recorded by the Volcanic Station of San Miguel (VSM) indicate that currently the count of daily earthquakes retains its typical behavior; no intensification is observed in its internal processes.

Figure 1. Seismic recording of the VSM station.

Due to its historical records, the San Miguel volcano is characterized by this type of activity, classified as Strombolian and characterized by explosions, generally not very violent, accompanied by hot mixtures of gas, ash and rock fragments.

Source et photos : Marn

Alaska , Takawangha :

51°52’1″ N 178°1’37 » W,
Summit Elevation 4754 ft (1449 m)
Current Volcano Alert Level: ADVISORY
Current Aviation Color Code: YELLOW

Panorama of Takawangha volcano, Tanaga Island, as seen from the west.

The ongoing earthquake swarm near Takawangha volcano waxed and waned in intensity over the past day. The earthquakes are generally shallow, having preliminary depths of about 2 to 4 miles (3 to 6 km) below sea level. This activity may be due to the movement of magma beneath the volcano. No eruptive activity has been detected in satellite views or other monitoring data.

Source : AVO.

Photo : Coombs, M. L.

Indonesia , Semeru :

Mount Semeru erupted on Monday, November 21, 2022 at 06:08 WIB with the height of the ash column observed at ± 400 m above the summit (± 4076 m above sea level). The ash column was observed to be white / gray with moderate intensity, oriented northeast. This eruption was recorded on a seismograph with a maximum amplitude of 22 mm and a duration of 64 seconds.

VOLCANO OBSERVATORY NOTICE FOR AVIATION – VONA

Issued : November 20 , 2022
Volcano : Semeru (263300)
Current Aviation Colour Code : ORANGE
Previous Aviation Colour Code : orange
Source : Semeru Volcano Observatory
Notice Number : 2022SMR697
Volcano Location : S 08 deg 06 min 29 sec E 112 deg 55 min 12 sec
Area : East java, Indonesia
Summit Elevation : 11763 FT (3676 M)

Volcanic Activity Summary :
Eruption with volcanic ash cloud at 23h08 UTC (06h08 local).

Volcanic Cloud Height :
Best estimate of ash-cloud top is around 13043 FT (4076 M) above sea level or 1280 FT (400 M) above summit. May be higher than what can be observed clearly. Source of height data: ground observer.

Other Volcanic Cloud Information :
Ash cloud moving to east. Volcanic ash is observed to be white to gray. The intensity of volcanic ash is observed to be medium.

Remarks :
Eruption recorded on seismogram with maximum amplitude 22 mm and maximum duration 64 second. –

SEISMICITY OBSERVATION
18 earthquakes of eruptions / explosions with an amplitude of 10 to 22 mm and a duration of 41 to 118 seconds.
1 distant tectonic earthquake with an amplitude of 30 mm, S-P 17 seconds and a duration of 88 seconds.

Source et photo : Magma Indonésie.

Ecuador , Reventador :

DAILY REPORT OF THE STATE OF THE REVENTADOR VOLCANO, Sunday November 20, 2022.
Information Geophysical Institute – EPN.

Surface Activity Level: Moderate, Surface Trend: No change
Internal activity level: Moderate, Internal trend: No change.

Lava flow on the northeast flank. Rebecca thermal camera. 11/19/2022 Time: 11:08 p.m. UT.

Seismicity: From November 19, 2022, 11:00 a.m. to November 20, 2022, 11:00 a.m.:

The reference seismic station has been transmitting data normally for the past 24 hours. The level of recorded seismic activity remains moderate.

Explosion (EXP): 36
Long Periods (LP): 52
Emission Tremors (TREMI): 9.

Rains / Lahars:
Yesterday afternoon there were rains in the area which did not generate lahars.

Emission / Ash Column:
Most of the time the volcano remained cloudy. Washington VAAC reported 4 emissions from 988 meters snc in a northwesterly direction.

Source : IGEPN.

Photos : IGEPN